pHAT DAC Install works with vlc but audio device setting problem

@nastanir wrote:

Setup:
Pi3A+ Raspbian Linux 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 updated
pHAT DAC connected using GPIO female connector soldered

Installation:
curl script in Pimoroni did not work due to proxy, thus manual set up followed
Step 1 Black list file empty, Step 2 snd_bcm2835 absent in /etc/modules
Step 3 did create asound.conf as instructed
Step 4 added dtoverlay for hifiberry, commented out dtparam=audio=on and additionally removed comment on dtparam=i2s=on.

What works:
Playing mp3 using vlc player works beautifully, volume control works on vlc player.
aplay -l command shows
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dac], device 0: HifiBerry DAC HiFi pcm5102a-hifi-0
Subdevices: 1/1
Subdevice #0: subdevice #0

What does not work:

clicking on audio device setting panel gives this message " No ALSA audio device were detected. enable the internal audio device, or connect a USB or HAT audo device"
Desktop sound control panel does not work.

Audacious complains " ALSA error: No suitable mixer element fount " but plays the file without any control over volume

Any suggestion or explanation would be appreciated.

Observation: Headphone works as well. Used Sennheiser PX80. Tested with headphone as well as auxiliary input of JBL FLIP4. Both sound flawlessly.

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